the Rustydragon Exhaust Smoke Machine

Basically a small 12v. heater element (like an auto ciggie lighter), a small computer fan, a little metal box, some switches and some smoke pellets.

hit the right switches and a puff of smoke blows out the propulsion exhaust system. and it burps with the sound effects module out of that goofy toy I got at the church thrift store
sounds like fun !
use the guts from a cheap dollar store 3 LED flashlight stuffed about 3 inches up the pipe to light up the smoke, mebbe change the LEDs to green, can't go wrong with green smoke,

also got some cheap glow in the dark plastic bugs and such at the dollar store, Thinking about melting a couple of those into a drippy mess just add a UV LED to flouresce the toxic looking mess

thats the plan anyway, still working on the execution